User's Manual

SECTION TWO
OPERATION
2.0 GENERAL
The ATS Model 1225 Hand Held Transceiver is one of the System 1200
devices. The System 1200 devices were designed to provide secure communications
to law enforcement agencies. This section describes the operation of the Model
1225 with the other units in the System 1200 family.
2.1 ATS 1200 SYSTEM COMPONENTS
The ATS System 1200 includes the Model 1245 monitor Station and the Series
1250 Transmitters.
2.2 MODEL 1225 OPERATION
Before operating the Model 1225, the user should read Section 1.2 of this
manual, where the user controls and interfaces are described.
The ATS System 1200 was designed to support two primary operating
scenarios. The first scenario is direct transceiver-to-transceiver
communications. In this scenario, communications occur between individual
transceivers, using either Channel A or Channel B. The second scenario requires
the use of a repeater to extend the operating range. In the Repeater Mode,
system components transmit on Channel A (or Channel C) and receive on Channel B.
To communicate with other units in the direct transceiver-to-transceiver
mode, all units must be set to the same channel, either Channel A or B, set to
the same code, either C or P and have the same keys loaded. To use the
repeater, the Model 1225 CHAN select must be set to R.
A fully charged battery pack should be installed onto the Model 1225 Hand
Held Transceiver prior to each deployment. To operate the Model 1225, place the
CHAN switch to the desired position, A, B, or R, select either the common (C) or
private (P) code with the CODE switch and turn the unit on by rotating the
VOLUME control from the OFF position.
NOTE
For non-repeater applications, all system transceivers MUST be set to the
same channel and code. Cross channel or cross code operation is not possible.
During idle periods, the Model 1225 will power down most of the receive
circuits.
The Model 1225 Hand Held unit only transmits when the PTT switch is
depressed. The integral, side panel mounted PTT is a momentary switch and must
be held down for the duration of the transmit interval. The Model 1225 also
includes an integral microphone and speaker. The microphone is sensitive and
should be held several inches away from the mouth when transmitting.
2.2.1 Safety Considerations
The Model 1225, as with all electronic devices, radiates Radio Frequency
(RF) energy and could pose a safety hazard if used improperly. To minimize any
potential radiation hazards, the user should:
a. Hold the radio so that the antenna is away from the face and body,
minimally 2-3", when transmitting and,
b. Minimize transmit time to approximately 1 ½ minute duration over a
15 minute interval.
2.3 EARPIECE/MICROPHONE ASSEMBLY
Optionally, the Model 1230-04 Surveillance Microphone/Earpiece Assembly
can be used with the Model 1225 Hand Held Transceiver. This assembly includes a
covert PTT microphone and a covert earpiece that can be hooked over the ear.
The assembly connects to a top panel Hirose connector. The Model 1225 integral